There would be no incels and femcels. Fact.
Everyone would have someone attracted to them, even if it's one person and they're not attracted back.
The saying, "There's someone out there for everyone," is more than likely true; however, nobody can verify that for sure as there's over eight billion in the world, but given the high amount of people, the likelihood of that statement being factual is very, very high.
I guess being completely and utterly disabled and disfigured might make it more difficult to "find" someone (if nobody was strangers and all eight billion knew each other) but there's definitely people into that sort of shit, so maybe not.
So, rounding back to my point:
Everyone would have someone attracted to them, and there'd be less loneliness and more relationships even if it is long-distance spanning continents or countries.
Interesting question. Good post, genuinely.